DR [page 20] [Dermatology Reports 2012; 4:e6] Allergic contact dermatitis from sculptured acrylic nails: special presentation with an airborne pattern Paula Maio, Rodrigo Carvalho, Cristina Amaro, Raquel Santos, Jorge Cardoso Contact Dermatitis Unit, Dermatology and Venereology Department, Curry Cabral Hospital, Lisbon, Portugal Abstract Methylmethacrylate was first reported in 1941 as a cause of contact dermatitis. Since then, occupational contact allergies to acry- lates in dentistry, orthopedic surgery, printing industry and industry have been reported, but few reports are found in the literature as a con- sequence of the contact with sculptured artifi- cial acrylic nails which are increasingly popu- lar. We describe here 3 patients with contact allergy to acrylates in artificial sculptured nails. Patch tests were performed with the Portuguese baseline series of contact aller- gens and an extended series of acrylates were applied. In particular, we tested three female patients with allergic contact dermatitis from sculptured acrylic nails. Two of these patients were both customers and also technical nail beauticians. Two patients developed periun- gual eczema; one presented only with face and eyelid dermatitis had no other lesions. The tests showed positive reaction to 2-hydrox- yethylmethacrylate (2-HEMA) and 2-hydrox- ypropylmethacrylate (2-HPMA) in all the three patients. Our cases demonstrate the variety of clinical presentations of allergic contact der- matitis from acrylic sculptured nails. They show the need to warn patients of persistent and sometimes permanent side effects of these products. They also emphasize the importance of cosmetic ingredient labeling. Introduction Sculptured artificial acrylic nails, have gained popularity over recent years. They can cause allergic contact dermatitis both in occu- pational and non-occupational settings. Acrylates are known allergens and also irri- tants.1 Methylmethacrylate was the first report- ed in 1941 as a cause of contact dermatitis.2 Since then, occupational contact allergies to acrylates in dentistry, orthopedic surgery, printing industry and industry have been reported in the literature.3,4 Polymerization of acrylate occurs when the polymer and the monomer are mixed together in the presence of an organic peroxide catalyst and accelerator. Hardening occurs at room temperature. However with photobonded sculptured acrylate nails, polymerization requires exposure to UV radiation.4 In this study, we describe 3 patients with distinct clin- ical presentations of contact allergy to acry- lates present in artificial nails. The patients were observed in a Contact Dermatitis Unit. Case Report Epicutaneous tests were applied on the upper back using Finn Chambers®, and a posi- tive patch test reaction was defined according to the International Contact Dermatitis Research Group guidelines. All patients were tested with the European baseline series (with additions recommended by the Portuguese Contact Dermatitis Study Group) and personal products. An extended series of acrylates were applied. Results We observed three female patients aged 35- 50 years old (mean 41.5) with allergic contact dermatitis from sculptured acrylic nails. Two of these patients were both customers and also professional nail beauticians. Two patients (one customer and the other both customer and professional nail beautician) developed periungual eczema two and four months respectively after the first application of acrylic gel (Figure 1); one of them had clinically an airborne pattern. The third patient only pre- sented with dermatitis localized to the face and eyelid that was noted four months after the first contact with sculptured acrylic nails. This patient had no hand/periungual or any other cutaneous lesions at distant sites. The tests showed positive reactions to 2-hydroxyethyl- methacrylate (2-HEMA) and 2-hydroxypropyl- methacrylate (2-HPMA) in three patients. Positive reactions to other acrylates were also found: in all our patients 2-hydroxypropyl methacrylate and triethylene glycol diacrylate; two of our patients tested positive for 2- hydroxyethyl methacrylate, ethylacrylate and hydroxyethyl acrylate, showing how allergic sensitization induced by one acrylic compound extends to one or more other acrylic com- pounds. One patient tested also positive to nickel with probable relevance to jewelry and to metallic pigment nail polisher. Dermatitis resolved in all patients after hav- ing their acrylic gel nails removed and in those with occupational setting, after they stop work- ing with as manicurists. Discussion Nowadays are available three distinct types of sculptured acrylic nails: acrylate monomers and polymers that polymerize at room temperature in the presence of an organic peroxide and accelerator; photobonded sculptured acrylate nails in which polymerization of the acrylate requires exposure to UV radiation; and, cyano- acrylates nail preparations. Our cases only used sculptured acrylic nails. Initial formulations contained methyl methacrylate monomer, which caused severe contact dermatitis, parony- chia and nail dystrophy. Since 1974, the Food and Drug Administration banned the use of this monomer in artificial nails.6 Currently market- ed artificial nails contain various methacrylate ester monomers such as ethyl, butyl and isobutyl methacrylate monomers; dimethacry- lates and trimethacrylates. Dermatology Reports 2012; volume 4:e6 Correspondence: Paula Maio, Contact Dermatitis Unit, Dermatology and Venereology Department, Curry Cabral Hospital, Rua da Beneficência, 8, 1069-166. Lisbon, Portugal. Tel. +351.963018082. E-mail: paulamaio@gmail.com Key words: contact allergy dermatitis, acrylates, airborne dermatitis. Conflict of interests: the authors report no con- flict of interests. Received for publication: 18 August 2011. Revision received: 7 March 2012. Accepted for publication: 12 March 2012. This work is licensed under a Creative Commons Attribution NonCommercial 3.0 License (CC BY- NC 3.0). ©Copyright P. Maio et al., 2012 Licensee PAGEPress, Italy Dermatology Reports 2012; 4:e6 doi:10.4081/dr.2012.e6 Figure 1. Clinical aspect of periungueal dermatitis. No n- co mm er cia l u se on ly [Dermatology Reports 2012; 4:e6] [page 21] Conclusions The reported cases demonstrate the hetero- geneous clinical presentation of allergic con- tact dermatitis from sculptured acrylic nails. Clinical manifestation in sensitized patients includes: contact dermatitis at contact areas and at sites distant to the contact; transient or permanent nail dystrophies and paronychia.6,7 Eyelid and face dermatitis can be caused by airborne dusts of completely polymerized resins that have become depolymerized by the filing process or by exposure to organic vapors and polymethacrylate dusts. The particular clinical presentation with an airborne pattern following exposure to methacrylate ester monomers has been report- ed in the English literature in dentistry, ortho- pedic surgery and printing industry but never in patients with sculptured artificial acrylic nails thus far as we know. References 1. Lazarov A. Sensitization to acrylates is a common adverse reaction to artificial fin- gernails. J Eur Acad Dermatol Venereol 2007:21:169-74. 2. Stevenson WJ. Methyl methacrylate der- matitis. Contact Point 1941:18:171. 3. Farli M, Gasperini M, Francalanci S, et al. Occupational contact dermatitis in 2 den- tal technicians. Contact Dermatitis 1990:22:282-7. 4. Hemmer W, Focke M, Jarish R. Allergic contact dermatitis to artificial fingernails prepared from UV light-cured acrylates. J Am Acad Dermatol 1996:35:377-80. 5. Constandnt L, Hecke EV, Naeyaert JM, Goosens A. Screening for contat allergy to artificial nails. Contact Dermatitis 2005; 52:73-7. 6. Fisher A. Adverse nail reactions and paraesthesia from photobonded acrylate sculptured acrylic nails. Cutis 1990:45:293- 4. 7. Andersen SL, Rastogi SC, Andersen KE. Occupational allergic contact dermatitis to hydroxyethyl methacrylate (2-HEMA) in a manicurist. Contact Dermatitis 2009;61: 48-50. Case Report No n- co mm er cia l u se on ly